کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4593970 | 1335735 | 2013 | 42 صفحه PDF | دانلود رایگان |
Let f1f1 (resp. f2f2) denote two (elliptic) newforms of prime level N , trivial character and weight 2 (resp. k+2k+2, where k∈{8,12}k∈{8,12}). We provide evidence for the Bloch–Kato conjecture for the motive M=ρf1⊗ρf2(−k/2−1)M=ρf1⊗ρf2(−k/2−1) by proving that under some assumptions the ℓ-valuation of the order of the Bloch–Kato Selmer group of M is bounded from below by the ℓ-valuation of the relevant L-value (a special value of the convolution L -function of f1f1 and f2f2). We achieve this by constructing congruences between the Yoshida lift Y(f1⊗f2)Y(f1⊗f2) of f1f1 and f2f2 and Siegel modular forms whose ℓ -adic Galois representations are irreducible. Our result is conditional upon a conjectural formula for the Petersson norm of Y(f1⊗f2)Y(f1⊗f2).
Journal: Journal of Number Theory - Volume 133, Issue 8, August 2013, Pages 2496–2537